Question about 1998 Ford Expedition
It's in the valve cover on top inside a big grommet and a hose is attached to it please go to rockauto.Com and look up your vehicle and then go to the exhaust and emission section and you will see what it looks like ok you have the PCM VALVE , HOSE ,AND GROMMET IN A KIT OR SEPARATELY THE MOTORCRAFT ONE SHOWS THE RUBBER GROMMET TO OK HAVE FUN STEPHEN
Posted on Oct 05, 2019
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Posted on Jan 02, 2017
the pcv is located on the rear(firewall) of the drivers side valve cover.turn counterclockwise and pull to remove be careful there are 2 small tabs inside the pcv hole in the valve cover(can feel with small finger) this is to hold valve in place so it wont leak.if you have a oil leak at the pcv a quick fix is to put a small amount of silicone around the pcv o-ring and install.wait hours for silicone to set up.
Posted on Oct 21, 2008
well i'm sorry that you got the miss information here on fixya. because all internal combustion engines need a pcv valve to operate properly.
now the information you got first is correct and pcv valve can set false codes like o2's and lean bank conditions also can cause you vechile to run or idle rough.
no there are a few different styles pcv valves and some times don't look like your convetional pcv. some are heated in different ways either by coolant ( witch look like a conventioanl pcv but with a coolant tube around them) then electricaly heated and they don't look like them at all. but one thing that has to stay the same is the pcv valve has to ventilate the crank case and will be found somewhere on or near the valve cover because it is the easiest and most accessible point of the engines crank case area. so i would look for that and usally on that vechile it is on the passanger side valve cover in the middle.
with that said and seeing you did all those repairs i would go right for that as my next step. but there is other thing that cold cause this issue like leaky injectors and is almost more likely becuase of the o2 sensor code and backfire. do you have the code # so i can look it up and best assist you?
see vechiles are hard to fix over the computer as i am trying so if you have any more question/info about this issue please ask and i will be glad to help.
Posted on Sep 22, 2009
Testimonial: "Cool thanks, i'll check the pcv valve/ line going into the back of the intake, if that doesn't work i'll go for the codes again....thanks again...."
it should be on the rear side of top case the by the on the valve cover opisite side of where you put oil in
Posted on Feb 25, 2010
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